Its good but it is very remote for people who are not familiar with that area that i missed several exits on the northern state parkway, is it possible for them to put a sign on the highway and lead them to the correct path to the theatre?

As you are leaving the Wantagh State Pkwy northbound, exit east towards Hauppauge. Your very first exit which comes up immediately on the exit ramp is Brush Hollow Rd. That will take you to the event. If travelling on the Northern State Pkwy going in either direction, East or West, look for Brush Hollow Rd exit.

There is a small sign on the Northern with an arrow. That's about it!